Thread Safety with DispatchQueue

DispatchQueue+ThreadSafety.swift

//
//  DispatchQueu+ThreadSafety.swift
//  BoleroPhone
//
//  Created by Dylan Gyesbreghs on 29/01/2019.
//  Copyright © 2019 iCapps. All rights reserved.
//

import Foundation

extension DispatchQueue {
    class func sync(_ completion: () -> Void) {
        if Thread.isMainThread {
            completion()
        } else {
            main.sync(execute: completion)
        }
    }
    
    class func async(_ completion: @escaping () -> Void) {
        main.async(execute: completion)
    }
}